*{
    margin:0;
    padding:0;
}
ul,li{
    margin:0;
    padding:0;
    list-style-type: none;
}
html{
    height:100%;
    width: 100%;
}
body{
    width: 100%;
    height: 100%;
    position: relative;
}
#top{
    width: 100%;
    height: 60px;
    position: relative;
    background-color: #2A3F54;
}
#left{
    width: 220px;
    position: absolute;
    top: 60px;
    bottom: 0;
    left: 0;
    font-size: 0;
    background-color: #455667;
}
#right{
    position: absolute;
    top: 60px;
    left: 220px;
    right: 0;
    bottom: 0;
    font-size: 0;
    background-color: #F7F7F7;
}
#logo{
    width: 220px;
    height: 100%;
    float: left;
    background-size: 100% 100%;
}
#menu_top{
    width: 240px;
    height: 40px;
    position: absolute;
    margin: auto;
    top: 0;
    left: 220px;
    bottom: 0;
    text-align: center;
}
#menu_top li{
    width: 120px;
    height: 40px;
    float: left;
    line-height: 40px;
    text-align: center;
    color: #E6E6E6;
    font-size: 18px;
    cursor: pointer;
}
#menu_top li:nth-child(1){
    border-bottom: 3px solid #E6E6E6;
}
#menu_top li:hover{
    background-color: #223243;
}
#quit{
    height: 40px;
    position: absolute;
    margin: auto;
    top: 0;
    right: 20px;
    bottom: 0;
    line-height: 40px;
    text-align: center;
    color: #FFFFFF;
    font-size: 14px;
    cursor: pointer;
}
#userphoto{
    width: 40px;
    height: 40px;
    float: left;
    background-size: 100% 100%;
}
#privilege{
    height: 40px;
    float: left;
    margin-left: 5px;
    margin-right: 2px;
}
#username{
    height: 40px;
    float: left;
    margin-left: 2px;
    margin-right: 5px;
}
#userarrow{
    width: 16px;
    height: 16px;
    float: left;
    margin-top: 12px;
    transition:0.5s;
    background-size: 100% 100%;
}
#quitlist{
    width: 120px;
    height: 98px;
    position: absolute;
    top: 62px;
    right: 20px;
    z-index:999;
    box-shadow: 2px 2px 5px #708090, -2px 2px 5px #708090;
    background-color: #FFFFFF;
    display: none;
}
#quitlist ul{
    padding-top: 3px;
}
#quitlist ul li{
    width: 100%;
    height: 30px;
    line-height: 30px;
    text-align: center;
    cursor: pointer;
}
#quitlist ul li:nth-child(2){
    border-top: 1px dashed #CCCCCC;
    border-bottom: 1px dashed #CCCCCC;
}
#quitlist ul li:hover{
    background-color: #E4F0F1;
}